This collection includes Survival, Hunted, and Frequency. Survival: When one of the men in charge of storing food for the town of Shadow Ridge is found murdered execution style, it's up to Jace McQuaid to find the killer. Hunted: Levi McQuaid searches for the sister of an old friend, Ava Solomon, but the situation takes a deadly turn when the search leads them on a dangerous trek across the west Texas desert. Frequency: Four deaths, likely tied to arsenic-tainted water, leave the town of Shadow Ridge frantic for answers. But that isn't the only nightmare Tess McQuaid is facing.

After a harrowing attempt on a judge's life at the courthouse, Deputy US Marshals Madison James and Jonas Quinn are tasked with finding a missing woman and an endangered child in connection to the murder of the judge's wife. What seems like a straightforward case becomes hopelessly tangled when the marshals discover that the woman they are searching for is in witness protection and the Amber Alert put out for the missing child has put two lives in danger. Madison and Jonas are forced into a race to find the woman and the child before the men who want her dead discover her location.

US Marshals Madison James and Jonas Quinn are thrust into a high-profile case when they are called on to transport two prisoners across the country on a private plane. But when the plane experiences engine trouble en route from the Pacific Northwest to Colorado, the pilots crash-land the aircraft deep in the heart of the sprawling Salmon-Challis National Forest. When Madison and Jonas regain consciousness, they find both pilots and one prisoner dead - and one fugitive on the run.

As a former smokejumper, arson investigator Bri Tucker knows her way around fires. But after a mysterious blaze takes the life of a former colleague, Bri inherits a curious puzzle from him that raises questions about several fiery deaths. Someone, however, doesn’t want her picking up where he left off in search of answers. When she teams up with ATF Special Agent Marc Davis to solve the puzzle, the case heats up—as does the attraction between them.

Elite Guardians bodyguard/former sniper Christina Sherman has protected uncooperative clients before—but this time, well, her client is bossy, headstrong, and occasionally eats off the floor. Yes, he’s a highly trained military working dog, but certainly her skills could be put to better use, right? Not according to former Special Forces Air Commando Grey Parker. He needs her help to protect his dog while he undergoes an experimental surgery that could restore his ability to walk.

EMS helicopter pilot Penny Carlton is used to high stress situations, but being forced to land on a mountain in a raging storm with a critical patient - and a serial killer on the loose - tests her skills and her nerve to the limit. She survives with FBI Special Agent Holt Satterfield's help. But she's not out of the woods yet.

When Mia Blackburn returns to Shadow Lake to inherit her uncle’s property, she doesn’t expect a threatening warning before she even reaches the rustic resort. And when a fire traps her in the burning barn that very day, she fears she won’t get out alive. Just in time, Ryan Maddox, her ex-boyfriend and Shadow Lake Survival owner, rescues her from the deadly blaze. She’s thankful for his rescue, but after their tumultuous breakup, he’s the last person she wants to see.

On the family’s Brazos River Ranch in Texas, Avery Elliott helps run her grandfather’s commercial construction business. Raised by Senator Elliott, Avery has never doubted her grandfather is the man of integrity and faith she’s always believed him to be . . . until the day she finds him standing with a gun over the body of a dead man. To make matters worse, Avery’s just discovered a billing discrepancy for materials supposedly purchased for construction of the Lago de Cobre Dam.

Private investigator Kenna Banbury lost everything two years ago at the hands of a serial killer. From the ashes of that encounter, she’s built a life she believes in, searching for the lost and forgotten all over the western US. When a series of murders drags her into an FBI investigation, Kenna finds herself back in the place where it all went wrong. Struggling to make sense of the case, Kenna’s past and present collide in a deadly plot that risks another betrayal and threatens to shatter everything she’s built.

EMT Freya Olson has lost her faith, but not her drive to save those who need her help. When the past that her family left behind after her mother's death shows up in Benson, Freya lands on the target list as well. But things aren't what they seem, and Freya’s loyalty will be pushed to the limit.

Luke has teamed up with Faith before, but he's not convinced she's up for the job, and she's not convinced he's telling her everything he knows. As more agents are targeted, Luke and Faith will have to learn to trust each other and work together to bring a killer to justice and prevent any more names from joining their fallen brothers and sisters on the Secret Service Wall of Honor.

When Devon Thompson’s car explodes at the click of her key fob, she doesn’t want to believe she was targeted on purpose. But when the next bomb is found in her apartment, she can’t ignore the fact that someone wants her dead. Trusting Captain Rhyland Finnegan with the truth isn’t easy, but soon she realizes Rhy is an honorable man who will go above and beyond to keep her safe.

FBI Special Agent Jesse Marx doesn’t know which is worse—waking up in a horse stable with no memories of the past several days or waking up to discover he’s wearing a wedding band. Not only has he been injured, but he’s also gotten hitched—something he vowed never to do.

No sooner has Alexis Stone been sworn in as the interim sheriff for Russell County, Tennessee, when a serial killer dubbed the Queen's Gambit Killer strikes again—this time in her hometown. Pearl Springs is just supposed to be a temporary stop along the way to Alex's real dream: becoming the first female police chief of Chattanooga. But the killer's calling card—a white pawn and a note with a chess move printed on it—cannot be ignored.

Just another Friday night. Or is it? Homeland Security Agent Dakota Pierce is in the Washington backwoods to sniff out domestic terrorism. DEA rookie Josh Weber and his dog show up to uncover a mystery of their own. When a young woman’s body is discovered, everything points to a local militia. The Northwest Counter-Terrorism Taskforce is on the case.

US Marshals Madison James and Jonas Quinn are thrust into a high-profile case when they are called on to transport two prisoners across the country on a private plane. But when the plane experiences engine trouble en route from the Pacific Northwest to Colorado, the pilots crash-land the aircraft deep in the heart of the sprawling Salmon-Challis National Forest. When Madison and Jonas regain consciousness, they find both pilots and one prisoner dead - and one fugitive on the run.

Detective Nate Quinn has just been cleared for active duty after a bombing killed 18 people, including his partner, and left him dealing with PTSD. His first case back on the job involves the murder of Stephen Shaw, and his only lead turns out to be an old friend, Grace Callahan - and her life is in grave danger. Someone believes Shaw gave his psychologist information before he died. Information for which they are willing to kill.

This collection includes Survival, Hunted, and Frequency. Survival: When one of the men in charge of storing food for the town of Shadow Ridge is found murdered execution style, it's up to Jace McQuaid to find the killer. Hunted: Levi McQuaid searches for the sister of an old friend, Ava Solomon, but the situation takes a deadly turn when the search leads them on a dangerous trek across the west Texas desert. Frequency: Four deaths, likely tied to arsenic-tainted water, leave the town of Shadow Ridge frantic for answers. But that isn't the only nightmare Tess McQuaid is facing.

Riley Bishop is a single mother, working at home as a graphic designer to provide for her two children, Sadie and Oliver. But something is very wrong. Riley starts forgetting things—like appointments, where she put her keys, and where she parked her car. And then she thinks she sees her deceased ex-husband while out shopping. But as Riley begins to question her own sanity, her twelve-year-old Sadie goes missing. Soon Riley finds it harder and harder to know what is truth and what are lies as she is forced to question her own reality while she searches for her daughter.

Tara Parrish is the only person ever to survive an attack by the Lone Wolf bomber. Scared and emotionally scarred by her near death, she goes into hiding with only one plan - to stay alive for another day. She knows he's coming after her, and if he finds her, he will finish what he started. Agent Cal Riggins has had only one goal for the past six months - to save lives by ending the Lone Wolf's bombing spree. To succeed, he needs the help of Tara Parrish, the one person who can lead them to the bomber.

No one needs to push Nikki Boyd to excel on the Tennessee Missing Person Task Force. The case of her own missing sister, still unsolved after 10 years, is the driving force in her work. When a Polaroid photo of a missing girl shows up at a crime scene, Nikki quickly recognizes similarities to the past. The closer she gets to the abductor, the more she feels that this case is getting personal and that she is not the hunter at all - but actually the one being hunted.

Wynter Evans is a promising young reporter for a television station in St. Louis, but even a bright future doesn't take away her pain over the disappearance of her brother nine years ago. So when she stumbles across a photograph of a boy with an eerie resemblance to him, she can't pass up the chance to track him down. With research for work as her cover, she sets out with one of the station's photos for the place where the picture was taken: the town of Sanctuary.

Former FBI Special Agent Jack Tanner is working as a detective in Montana when he comes across a body in the national forest during a search and rescue mission. He's committed to finding the killer, even if it means working alongside his old flame, US Forest Service Special Agent Terra Connors. When Terra discovers that the murder victim had ties to a powerful and dangerous trafficker of archaeological artifacts, the investigation takes a deadly turn - one that hits too close to home.

Kaely Quinn's talents as an FBI behavior analyst are impossible to ignore, no matter how unorthodox her methods. But when a reporter outs her as the daughter of an infamous serial killer, she's demoted to field agent and transferred to St. Louis. When the same reporter who ruined her career claims to have received an anonymous poem predicting a string of murders, ending with Kaely's, the reporter's ulterior motives bring his claim into question. But when a body is found that fits the poem's predictions, the threat is undeniable.

Fifteen years after a serial killer tormented them, Addie and Jacob are living very different lives. As an FBI Profiler, Addie is on the edge of burnout. When she returns home, she has to face down every nightmare she's ever had. Is the resurgence of a series of all too familiar deadly crimes the work of a former ally, or a mastermind who has been pulling her strings all along?

After a harrowing experience with an obsessed patient, oncology nurse practitioner Leigh Weston needed a change. She thought she'd left her troubles behind when she moved home to Carrington, North Carolina, and took a job in the emergency department of the local hospital. But when someone tampers with her brakes, she fears the past has chased her into the present. She reaches out to her high school friend turned homicide investigator, Ryan Parker, for help. Ryan finds satisfaction in his career, but his favorite way to use his skills is as a volunteer underwater investigator.

Mia Tathers is an ATF Special Agent. It’s not like she needs Conroy to protect her. However, when it becomes clear someone is recreating her biggest mistake, Mia has to face her own inability to forgive Conroy for what he took from her. It’s the only way she’ll stay alive.

Special Agent Meghan Connors's dream of one day protecting the president of the United States is about to come true. Only one assignment stands in her way. After the vice president's rebellious daughter is threatened, Meghan is assigned to her protective detail on a secluded ranch in West Texas. Unfortunately, working with Special Agent in Charge Ash Zinders may be as tough as controlling her charge. Ash has a reputation for being critical and exacting, and he's also after the same promotion as Meghan. Then the threats escalate and security on the ranch is breached....

Research scientist Caitlyn Lindsey is convinced that someone is taking out her team one by one. First, a friend and research partner was killed in a home invasion. Three months ago, her boss died in a suspicious car accident. Four days ago, another partner supposedly committed suicide. And now Caitlyn herself has miraculously survived a hit-and-run. Afraid for her life with nowhere to turn, she reaches out to one of the victim's husbands, Detective Josh Solomon.

When Marianna Santino's roommate is killed, Detective Ethan O'Hara can't fathom the motive. Then he realizes the deaf teacher was the intended target. Marianna must have something the murderer desperately wants. But what? Digging for the truth, the guarded cop tries to learn everything he can about Marianna. Her world. Her family. Her beauty, faith, and fierce independence. In spite of himself, Ethan finds that he can't keep his feelings at bay. Soon, he's willing to risk everything to lay the silent terror stalking Marianna to rest.